Paul Krugman makes the argument that Edwards done good.
Mr. Edwards, far more than is usual in modern politics, ran a campaign based on ideas. And even as his personal quest for the White House faltered, his ideas triumphed: both candidates left standing are, to a large extent, running on the platform Mr. Edwards built.
To understand the extent of the Edwards effect, you have to think about what might have been.
At the beginning of 2007, it seemed likely that the Democratic nominee would run a cautious campaign, without strong, distinctive policy ideas. That, after all, is what John Kerry did in 2004.
If 2008 is different, it will be largely thanks to Mr. Edwards. He made a habit of introducing bold policy proposals — and they were met with such enthusiasm among Democrats that his rivals were more or less forced to follow suit.
It’s hard, in particular, to overstate the importance of the Edwards health care plan, introduced in February.
As I have previously stated, I agree with this line of argument. My difference with Krugman is that in he is generally favorable to Hillary and skeptical of Obama, while I am generally skeptical of Hillary and favorable toward Obama.